Eregon

Eregon is a shape changing robot and is rivals with the tomorrow people. He mentions that 10,000 years back old telepaths stole from his planet. The Tomorrow People trap him in Agartha but he is freed by other robots, opening a gateway to Agartha. Then Ben reaches Mars and uses a lever to deactivate all shape shifters for 10,000 years. In the alternate universe in which Season 3 takes place, the new Eregon carries out the same motives.